Motorola MVME712-12 用户手册
Support Information
3-2
MVME712-12/-13/A/AM/B Transition Modules and LCP2 Adapter Board UserÕs Manual
3
All front panel connectors have metal shells and jack posts that are electrically
connected to the front panel. If the front panel is electrically connected to the
chassis ground, then the shells and jack posts are connected to chassis ground.
This allows shielded cable to be used for effective reduction of EMI and EMC
problems.
connected to the front panel. If the front panel is electrically connected to the
chassis ground, then the shells and jack posts are connected to chassis ground.
This allows shielded cable to be used for effective reduction of EMI and EMC
problems.
Connector P2 Interconnect Signals (LCP2 Adapter)
Connector P2 on the LCP2 adapter board is a standard DIN 41612 triple-row,
96-pin male connector. Each pin connection, signal mnemonic, and signal
characteristic for the connector rows A and C are the same pin-for-pin as
connector P2 on the MVME1xx VMEmodule. Row B has only +5 Vdc and
ground connected on the LCP2 adapter.
96-pin male connector. Each pin connection, signal mnemonic, and signal
characteristic for the connector rows A and C are the same pin-for-pin as
connector P2 on the MVME1xx VMEmodule. Row B has only +5 Vdc and
ground connected on the LCP2 adapter.
Connectors J1, J3-J5 Interconnect Signals (MVME712
x)
Connectors J1 and J3-J5 are EIA-232D 9-pin front panel connectors. Each pin
connection, signal mnemonic, and signal characteristic for the connectors is
listed in
connection, signal mnemonic, and signal characteristic for the connectors is
listed in
.
Table 3-3. Connectors J1, J3-J5 Interconnect Signals (MVME712
x)
Pin
Number
Signal
Mnemonic
Signal Name and Description
1
DCD
DATA CARRIER DETECT - Sent by the modem
to the terminal to indicate that a valid carrier is
being received. Not used by port 1 (J1).
to the terminal to indicate that a valid carrier is
being received. Not used by port 1 (J1).
2
RXD
RECEIVE DATA - data that is demodulated
from the receive line is presented to the terminal
by the modem.
from the receive line is presented to the terminal
by the modem.
3
TXD
TRANSMIT DATA - data to be transmitted is
furnished on this line to the modem from the
terminal.
furnished on this line to the modem from the
terminal.
4
DTR
DATA TERMINAL READY - A signal from the
terminal to the modem indicating that the
terminal is ready to send or receive data.
terminal to the modem indicating that the
terminal is ready to send or receive data.
5
GND
GROUND
6
DSR
DATA SET READY - DSR is a function supplied
by the modem to the terminal to indicate that
the modem is ready to transmit data. This signal
can be held high or low through header J8, J9,
J13, J14.
by the modem to the terminal to indicate that
the modem is ready to transmit data. This signal
can be held high or low through header J8, J9,
J13, J14.